Automatic heat-regulating system



(No Model.)

J. V. STOUT. AUTOMATIC HEAT REGULATING SYSTEM.

No. 592,924. Patented Nov. 2,1897.

WITNESSES INVENTOR,

UNITED STATES Fries.

PATENT JOHN v. STOUT, on EASTON, PENNSYLVANIA.

'AUTOMAT'IO HEAT-RiE GULATlNG SYSTEM.

SPECIFICATION forming part of Letters l atent N0. 592,924, datedNovember 2, 1897. Application filed une 6, 1895. Serial No. 551,919. (Nomodel.)

To all whom itmayconcern:

Be it known that I, JOHN V. STOUT, a citizen of the United States, and aresident of Easton, county of Northampton, and State of Pennsylvania,have invented certain new and useful Improvements in Automatic Heat-Regulating Systems, of which the following is a specification. L l

The invention relates to heat-regulatin g apparatus in which passage ofa heating fluid from a source of such fluid to a'radiator or otherheating-device is controlled by a valve which is normally held in one ofits positions that is, closed or openbut which is moved to its otherposition when an auxiliary valve is suitably controlled, preferably bymagnets in thermostatic circuits.

The main object of the invention is to provide such a system with animproved auxiliary-valve apparatus having a single valve to becontrolled, and that an inlet-valve. In this apparatus theoperating-magnets, circuit connections, and mechanism are entirelyexterior to the Valve-body, so that they are not exposed to the actionof the fluid used, thus making it practicable to use steam or water aswell as air for the controlling fluid without injuring said parts andyet to be able to make and break the circuits after each operation. Nopacking is used between the exterior operating mechanism and the valvewithin the valve-body. Hence movement of the valve,

and all the power necessary to move the valve is simply to overcome thepressure in the system. I

In the drawings, Figure lshows a central vertical section of theauxiliary valve appa-j ratus connected to the main-valve apparatus in asupply-pipe leading to heating apparatus and the circuit connections,and Fig. 2 shows a modification.

1 is a supply-pipe of a heating system leading to a radiator 2 or otherheating device, there being a main valve 3 in said pipe, which is heldclosed by pressure on piston 4 in cylinder 5 when the inlet-valve in theauxiliary apparatus is open. The cylinder is connected by a pipe 6 withpipe 7, which is connected to a source of pressure--e. g., to thesupplypipe 1 below valve 3, as indicated-by pipe 7 Between pipes 6 and 7is the auxiliary valve 8,adapted to rest on the inlet-port 9. Throughplug 10 is a passage through which extends loosely the valve-stem 11,having at its upper end a disk 12, against which presses upward thespring 13. Through the upper end of the valve-body is a passage 14 andin it a non-packed operating-stem 15, having at its lower end a disk 16and at its other end a'disk 17, adapted to rest alternately against theends of passage 14. These disks play no part in the operation of themain valve by the auxiliary valve, but serve to prevent undue leakagearound the stem 15, for it will be seen that the space around the stemis tightly closed, except when the stem is actually moving; but when thestem moves up the small amount of fluid around the stem will be free toescape. This arrangement is an important feature of this improvement. Itgives a freely-moving stem, while keeping the waste of fluid-pressuresmall. The fluid that does escape is kept from the magnets and circuitconnections by diaphragm 18. The upper end of stem is secured,preferably, to a flexible diaphragm 18 by nuts 19. Since there will be asmall leakage, a waste-pipe 20 is provided from the chamber below thediaphragm. A spring 21, stronger than spring 13, presses down on disk16, forcing stem 15 against stem 11, holding valve 8 open (when thesystem-is in the condition shown) and the main -valve 3 closed.operating stem is not retarded by friction,

22 is aframe supporting controlling-magnets'M'M, lever 23 with armature24, and angle-lever 25 with armature 26. The vertical arm of theangle-lever is adapted to stand above the end of lever 23 to hold itdown, be-

' ing pushed forward by spring 42 and adapted also to move off from thelever 23 when armature 26 is attracted. Lever 23 is connected by a chain27 or otherwise to stem 15.

ture falls to move into contact with spring 32, which is connected bywire 3-1 to magnet M. Blade 31 is connected to a source of electricityB, thence by wire 37 to contacts 41 36, carried by but insulated fromlevers 25 and 23 byinsulation a. Contact 4C1, when lever 25 is inengagement with lever 23, does not touch contact 10, which is connectedto magnet M by wire 39, and thence by wire 38 to contact 33 of thethermostat; but spring 36 does rest on contact 35, which is connected tomagnet M, and thence to contact 32. As the temperature falls blade 31will move against contact 32, magnet M will attract its armature,bringing parts 41 40 together and releasing lever 23, which will rise,allowing the valve 8 to close and separating parts 35 36, opening thecircuit of magnet M, and leaving the circuit of magnet M in condition tooperate when closed by blade 31 moving against contact 33 on a rise intemperature resulting from the opening of valve 3. lVhen valve 8 isclosed, the valve 3 will open gradually, as above set forth.

In Fig. 2 the mechanism carried by frame 22 is broken away, since it maybe the same as in Fig. 1.

In Fig. 2 the parts 8', 9', 10, 13, 11, 12.,141, 15, 16, 17, 18, 20, 21,22, 23, 21, 27, 28, and M correspond to the similar parts of Fig. 1, butin the construction of Fig. 2 spring 21 presses up on stem 15 instead ofpressing down, as does spring 21 of Fig. 1. \Vhen lever 23 is released,spring 21 closes disk 16 and spring 13 closes valve 8.

The stems are so adjusted that when in the position shown there is aslight clearance between them, but when stem 15 is moved down it strikesand moves the stem of valve 8. A weight IV or a spring of sufficientstrength to overcome springs 13 and 21 and pressure at S will open valve8 when lever 23 is pulled downward by magnet M, compressing spring 28,as will be evident.

As stem 15 has but little pressure to overcome, it is made small andfits closely in the bore through which it passes, but so that it cantravel freely without causing friction and at the same time will reducethe leak around stem 15 to a minimum.

Having described my improvement, What I claim is 1. In combination witha heating plant or system, a main valve for controlling the delivery ofthe heating agent; a motor for actuating said valve; a source offiuid-pressu re; a pipe connecting the motor and the source offluid-pressure; an auxiliary valve interposed between the motor and itssource of supply for controlling delivery to said motor; an electricmotor for actuating the auxiliary valve; and an actuating-stem for saidvalve, connected with the electric motor, passing through a tube or plugof the valve-containing shell, and provided with disks adapted to bearalternately upon opposite ends of the plug or tube and to seal the samewhen the actuating-stem reaches its highest or its lowest position.

2. In combination with a heating plant, a main valve for controllingdelivery of the heating agent; a motor for actuating said valve; asource of fluid-pressure; a pipe connecting the motor with the source offluidpressure; an auxiliary valve for controlling the pressure on themotor; an electric motor for actuating the auxiliary valve; and twovalves operatively coilnected with the auxiliary valve and with theelectric motor, and serving to seal the shell or easin g containing theauxiliary valve substantially as described and shown.

3. In a heat-regulating apparatus the combination of a main valve forcontrolling the delivery of the heating agent; a fluid-pressure motorfor actuating said valve; an anxiliary valve for controlling thedelivery of fluid to said motor; an electric motor for actuating theauxiliary valve; and a device for preventing escape or waste of theactuating fluid, comprising two valves located between the auxiliaryvalve and the electric motorand in operative connection or relation withboth; whereby one or the other valve is caused to seal thecontaining-shell of the auxiliary valve as said valve is moved to eitherof its extreme positions.

4. The combination of a valve-body, an inletvalve therein, a valve-stem,an unpacked operating and guiding stem extending through the valve-bodyand in position to move the valve, and two disks or devices on theunpacked stem, one in position to close the space around the unpackedstem when it is moved in one direction, and the other in position toclose said space when the stem is moved in the opposite direction forpreventing waste of fluid and allowing the stem to move easily.

Signed this 3d day of June, 1895.

JOHN V. S"OU'l.

\Vitnesses: I

J. M00. SNYDER, ED. 0. SMITH.

ICC

